Re: Confirmation of Shannon's Mistake about Perfect Secrecy of One-time-pad

On Oct 24, 5:45 am, wangyong <hell...@xxxxxxx> wrote:
The probability distribution of the plaintext has no relationship at
all to the possible values of the cyphertext or their probabilities.
How can any
observation of the cyphertext provide any information about the
probability distribution of the plaintext?

- William Hughes
iit It is the conditonion that ciphertext as a fixed
value.
The paper has state thaet view



There is no connection between the probablity distribution
on the plaintext and that on the cyphertext. Thus, knowing the
value of the cyphertext does not tell us anything about the
distribution of the plaintext.

- William Hughes

.

Relevant Pages

  • Re: Confirmation of Shannons Mistake about Perfect Secrecy of One-time-pad
    ... The probability distribution of the plaintext has no relationship at ... all to the possible values of the cyphertext or their probabilities. ... The paper has state thaet view ...
    (sci.math)
  • Re: Confirmation of Shannons Mistake about Perfect Secrecy of One-time-pad
    ... on the plaintext and that on the cyphertext. ... tell us something about the distribution of the plaintext (i.e. ... then we know that the probability distribution of the plaintext is ...
    (sci.math)
  • Re: Question about bit strength
    ... EncryptedData = DataBlock XOR Key ... This is basically a stream cypher with some extraneous blocking added. ... The key is repeated if the plaintext is ... function Encryptreturns cyphertext ...
    (sci.crypt)
  • Re: Steganography - Encryption challenge
    ... it's easy enough to make up one which will make the plaintext fit the ... encrypted messages available to the public increases, ... access to the application which produced the cyphertext allows you to ... the algorithm and you have some idea about the implementation. ...
    (borland.public.delphi.non-technical)
  • Re: Strongest encryption algorithm
    ... no bit in the plaintext should encode to the same bit in the ... Interesting extrapolation, but it only applies on a bit sized alphabet, ... resulting cyphertext had zero L's in it. ... Enigma had been broken before then, before the war, in fact, by the Polish. ...
    (sci.crypt)